"The Vulkan Classic 3010 Thigh and Hamstring Support Sleeve comprises of three layers: 1. A protective outer nylon top layer 2. A closed cell neoprene layer that retains heat and provides compression 3. The unique Aerotherm spiral lining that allows air to circulate, drawing perspiration away from the skin to reduce skin irritation and increase comfort The combination of closed cell neoprene and the Aerotherm lining helps working muscles retain natural body heat and protect against sprains and strains which account for almost two thirds of all injuries. Retaining heat increases local circulation, improving elasticity and the range of pain free movement. Healing is promoted and recovery times shortened enabling you to get back to doing the things you want to do much sooner. ? Hardwearing support provides compression and helps retain body heat to increase blood flow ? Ideal for anyone returning to activity following an injury to the thigh or hamstring muscles ? The Aerotherm lining allows the support"